Knowra Opioid use disorder Opioid use disorder Opioid use disorder is a pattern of opioid use that causes significant impairment or distress, often involving loss of control, craving, and continued use despite harm.
Opioid : A substance that activates opioid receptors, reducing pain and potentially producing euphoria and respiratory depression. Opioid use disorder can involve prescription pain medicines, heroin, or synthetic opioids.
Medication for opioid use disorder : Treatment using medications such as methadone, buprenorphine, or naltrexone to reduce opioid-related harms and support recovery. These medications are core treatments, not substitutes for care or evidence of failed recovery.
Opioid intoxication : A reversible syndrome caused by recent opioid exposure, often involving sedation and slowed breathing. Intoxication describes an acute state; opioid use disorder describes a persistent pattern.
Opioid overdose : A toxic reaction to opioids that can cause dangerously slowed or stopped breathing and death. Overdose is an acute, potentially fatal consequence, especially when tolerance changes or opioids are combined.
Opioid receptors : Cell-surface receptors that respond to endogenous opioid peptides and opioid drugs. Their signaling mediates opioids’ effects on reward, pain, breathing, and withdrawal.
Methadone : A long-acting opioid medication used to treat opioid use disorder and, in some settings, pain. Steady dosing can suppress withdrawal and craving without the rapid drug effects of short-acting opioids.
Opioid-induced disorder : A mental or physical condition caused by opioid exposure, such as intoxication, withdrawal, or certain psychiatric symptoms. An opioid-induced condition can occur with or without opioid use disorder.
Fentanyl : A potent synthetic opioid used medically and also produced illicitly. Illicit fentanyl in drug supplies raises overdose risk for people using opioids.
Tolerance : A diminished response to a drug after repeated exposure, often prompting larger doses for the same effect. Tolerance can develop during opioid use, but does not by itself establish the disorder.
Buprenorphine : A partial opioid agonist used to treat opioid use disorder and pain. It can reduce withdrawal and craving while limiting some effects of full agonists.
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